Film mending and assembling machine



Sept. 4, 1923. 1,467,077

E. L. VAN PELT FILM MENDING AND ASSEMBLING MACHINE Filed July 6, 1920 Patented Sept. 4, 192.3.

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ELMER L. VAN RELT, or DENVER, CCLCRADC, V.eSSIerNoR To GEORGE ERUTE, or' DENVER, COLORADO, AND HENRY E. MCELWAIN, or ECLYCKE, MASSAGEUSETTS.`

FILM MENnINev AND RSSEMELING MACHINE.

Application led July 6,

To all whom t mary concern.'

Be it known that I, ELMER L. VAN PELT, a citizen of the United States, residing at the city and county of Denver and State of Colorado, have invented certain new 'and useful Improvements in 'Film Mending and Assembling Machines; vand I do declare the following to be a full, clear, and exact description of the invention, such aswill enable others skilled in the ar't to4 which it appertains to make and use the same, reference being had to the accompanying drawings, and to the characters of'reference marked thereon, which form a part ofthis specication. L

The object of this invention is to provide a machine for use in mending and assembling motion pic-ture films, by means "of which the overlapping ilm -ends maybe cemented and pressed or clamped together to form a firm bond.`

Briefly the invention comprises a. frame having a base and an 'overhanging arm spaced therefrom to provide a space in which one of a pair of cutting blocks is mounted stationarily and in which the other of the pair of cutting blocks reciprocates along the side of the' fixed block. `Each block has a pair o-f slots to receive two film ends in overlapping relation. One slot in each block receives that'portion of one film end which is to be trimmed o during the operation, while the other slot receives the body of the other film end. The frame also carries a cement receptacle from which a wick leads which is adapted to'be reciprocated into position between the opposed lm ends and the corresponding pressing or clamping faces of the cutting blocks. The wick is withdrawn leaving the opposed film surfaces with a coat of cement. The movable block is then reciprocated whereby the eX- tremities of the films are cut off, thus giving a neat finish, and the opposed cemented film surfaces are pressed together untila firm bond is formed.

In the drawings Fig. 1 is a side eleva-tion of the device taken from line 1-1 of Fig.. 3. l

Fig. 2 is an end elevation from. line`2`2 of Fig. 1. p

Fig. 3 is a view partially in plan and 1920. seriarNo. 394,138. ,n

,partially in section as indicated by line 3-3 -ofFig.1.f'

Fig. 4-is a side elevation of the cutting 'blocks' removed -from the frame but in assembled relation to each other.y

Fig. 5 is a section on line 5 5 of'Fig. 4.

The frame 10 comprises a base 12havi`ngV The frame 10 has a vertically .extending` transverse wallA 2 4 at the rear end'offthe space between the base v12 and arm 16, against` which the innerer rear ends' of the two cutting blocks A25 and 35 abut. l The height of thev stationary cuttingblock 25 is 'equal tothe height of the space between'base 12 andarm' 16, so that said block 25 fits snugly between Said baseand'arm.y The block 25 comprises an upper jaw`26and a lower jaw 28, the'jaw 28 having a transversely offset ledge whose upperlface 30 constitut'es a clamping seat or bench against which the film is to be pressed. The block 25 is sloted to produce a beveled face 32 on jaw 26`and a beveled face 33 on jawl28. These slots extend rearward from the front end ofthe block a distance a little greater thanv'the widthiof film to be handled, and produce between them a forwardly projecting tongue 34 whose yupper face inclines downward slightly asindicated at 134 to form an eiiicient .cutting edge; see dotted lines in Fig. 4.

Similarly, the movable block '35 has an upper jaw 36 and a lowerjavvi38, the upper Jaw having a laterally oifset overhanging ledge 39which presentsa clamping face or bench 40 opposed' to bench 30; `Thi`s iblock is slotted as is'block 25 to produce beveled faces 42 and 43 like those at32 and "33, and toproduce a forwardly projecting tongue 44 like tongue .34 except that its lower face 144l M(Fig. 4) ginclines upward. The rea'r portion" ofledge 39 is cut awayto 4form a ,vertical shoulder 45 to accommodate avv wick receiving tube 46 mounted f in wally 24as indicated at 43 and communicating with cavity Q0.

The length of blocks 25 and 35 is preferably about equal to that of arm 16, while tongues 34 and 44 project slightly forward as shown. The lower jaw 38 is not so deep as jaw 23 in order that block 35 may be reciprocated vertically alongside block 25. Block Q5 is retained in position against block 35 by means of a pair of leaf springs 50 which are secured at 52 to the frame l0 and whose forward ends are offset to form de- 'tents 54 tok engage in recesses orkerfs vertically disposed in the sides of jaws 26 and 28.

Block 35 is supported by means of a pin 55 which is threaded into its upper portion and which is reciprocably mounted in arm 1G: The head of pin 55 is flanged as indicated at 56 `and bears against a lower cam face 58 on the lower end of a handle 60 which is eccentrically pivoted between ears on arm 16 as indicated `at 62. Nose 64 on the extreme tip of `handle 60 engages a shoulder von arm 16 to limit swinging movement of said handle. A spring 66 is mounted on pin 55 with its upper end in engagement with flange 56 and its lower end resting in seat 68 in arm 16. This spring normally retains block 35 and handle 6() in elevated position. retain the parts inoperative rel-ation and eliminate any tendency of block 35 to rotate on axis of pin 55 a pair of bent leaf springs 70 are secured to the side of the frame at 72 and have their tips 74 bent parallel to the side walls of block 35 to engage the upper and lower jaws 36 and 38. Thus the snug fit of block 25, the springs 50 and 70, and

pin 55, maintain the operative positions of theparts.

For properly positioning the film ends F, a plate 75 is secured to the base l2 and is provided with upfstanding webs T6 whose upper edges form supports for the film ends, the corners of said upper edges being provided with teeth or projections 'T8 to engage in the sprocket holes O. These teeth 78 are higher on one side than on the other an amount approximating the thickness of the tongues 34 and 44, due to the fact that one film end lies upon the tongues while the other end lies under them on bench 30, as indicated at Z) and a respectively.

For cementing the overlapping ends of the lms, a wick 80, which has preferably a stiff core, is provided, the wick being adapted to take up cement and conduct it to its forward extremity by capillary attraction. The forward end of said wick lies normally in the forward end of the tube 46 so as-to be close to said rear wall 45 of block 35. At the rear of the transverse portion of wick 80, a ste-m S2 is connected which is provided with an operating knob In order to firmly.

S4. The stem 82 is reciprocable in a. horizontal slot which is normally covered by a horizontal plate 85 reciprocable with stem 82 and knob 84, the plate 85 preventing evaporation of the cement.

In operation, the block 35 is initially in its normal position as shown in the drawings. One piece of film F is brought from the right and placed under tongues 34 and 44 so that it lies on bench 30 and the extremity L to be trimmed .off lies tothe left. Another piece of film F is brought from the left and laid on tongues 34 and 44 and beneath bench 40, so that the extremity Z2 to be trinrmed off lies at the right. Knob 84 is then grasped and wick 8O projected into thel space between the two films `and ybetween tongues 34 and 44 to coat the opposed film portions with cement. The wick is then withdrawn,

and handle 60 depressed in the direction of t-he arrow, Fig. l. The adjacent edges of bench 40 and tongue 34 cooperate Ito sever extremity b, while the adjacent edges of bench 30 and tongue 44 cooperate to 'sever extremity a. The cemented faces of the opposing films are then pressed and clamped together between benches 30 and 40 and held in such position for a few seconds to obtain a firm union. The handle 60 is then released, whereupon spring 66 returns block 35. The film is then removed, the extremities a and Z9 falling away.

It will be noted that the end of the tube 46 which normally houses the: end of the cement Vladen wick 80, terminates close to the edge of the film ends F when in position. 1t will also be noted that the tongues 34 land 44 are farther apart than are the adjacent film surfaces when in position.

Thus when the wick is reciprocated by knob 84, the cement is wiped on the film surfaces only, leaving the dies or bloc-ks 25 and clean. In this manner gumming of the blocks or any other part of the machine is entirely avoided and a neat, clean joint is produced in the film.

I claim:

l. A film mending and `assembling machine comprising a pair of relatively movable cutting blocks each of which has a pair of relatively fixed cutting edges.

2. A film mending and assembling machine comprising a pair of relatively movable cutting blocks each of which has a pair of film receiving slots.

3. A. film mending and assembling machine comprising a pair of relatively movable cutting blocks each of which has a pair of film receiving slots and a pair of cutting edges.

4. A film mending and assembling machine comprising a pair of relatively movable cutting block each of which has apressing` bench and a pair of film receiving slots.

5. A lm mending and assembling mal lll) chine comprising a pair` of relatively movable cutting blocks each of which has a pressing bench, a pair of film receiving slots,

and a. pair of cutting edges.

6. A film mending and assembling machine comprising a pair of relatively movable cutting blocks, each of which has an offset ledge to provide a pressing bench, said pressing benches opposing each other, each block having a tongue separated from the body of the block by a film receiving slot.

7. A film mending and assembling machine comprising a pair of relatively movable cutting blocks, each of which has an offset ledge to provide a pressing bench, said press-ing benches opposing each other, each block be provided with a tongue separated from the body of the block by a film receiving slot, each tongue having a cutting edge, and each block body having a cut-ting edge.

S. A lm mending and assembling machine comprising a pair of relatively movable cutting blocks each of which has a pair of cutting edges and each of which has a pressing bench, and means for cementing opposed film surfaces lying adjacent said benches.

9. A film mending and assembling machine comprising a pair of relatively movable cutting blocks, each block having a pressing bench, said benches opposing each other, a tongue member on each block separated from the body of the block by a slot, both the body of each bloclr and each tongue having a cutting edge, and means located adjacent said blocks for applying cement to opposed film faces lying adjacent said benches.

10. A lm mending and assembling Inachine comprising a pair of relatively movable cutting blocks, each bloclr having an upper jaw and a lower jaw, and a tongue between the jaws and spaced therefrom by film receiving slots, the upper jaw of one block and the lower jaw of the other block having offset overhanging ledges whereby the ledges present opposed pressing benches, the ledge and the tongue of each block having cutting edges cooperating respectively with the edges on the other block.

11. A film mending and assembling machine comprising a pair of relatively movable cutting blocks, each block having upper and lower jaws and a tongue between the jaws and spaced therefrom by slots, each block having a ledge offset toward the other block presenting opposed pressing benches, each block having two cutting edges cooperating with the cutting edges on the other block, and a reciprocable cement applying member movable between opposed film faces on said benches to coat said faces with cement.

1:2. A film machine comprising a pair of relatively movable cutting blocks, vand means to apply'cement between said blocks.`

13. A` lm joining machine comprising a pair of blocks adapted to receive overlapped film-ends between them, and means for wiping cement on opposed film faces between said blocks. f

14. A film joining machine lcomprising a pair of relatively movable cutting blocks adapted to receive between them overlapped film ends in spaced relation, and reciprocable means movable into position between the opposed film-faces for wiping cement on said faces.

15. A film joining machine comprising a pair of relatively movable cutting blocks having offset ledges providing opposed pressing faces adapted to receive overlapped film-ends between them in spaced relation, each bloclr having a tongue separated from the body portion thereof by a film-receiving slot, said tongues spacing the film ends, and Cement applying means movable into position between the opposed film faces and between said tongues for wiping cement on said film faces.

16. A film joining machine comprising a frame, a stationary cutting block mounted in said frame, a movable cutting block reciprocable alongside the fixed block, a tongue on each block separated from the body of the block by a film receiving slot, said tongues being spaced from one another in one direction and adapted to space filmends in another direction, a cement receptacle connected with said frame, and

means leading from said' receptacle and adapted to be projected betwen said tongues and between said film-ends to wipe cement on the opposed film faces.

17. A film mending and assembling machine comprising a pair of relatively movable cutting blocks, each of which has a tongue separated from the body of the block by a lm-receiving slot..

18. A film mending and assembling machine comprisinga pair of relatively movable cutting blocks, each of which has a tongue separated from the bodyl of the block by a pair of film-receiving slots, each block having a pair of cutting edges.

19. A film mending and assembling machine comprising a pair of relatively movablel cutting blocks having opposed pressing benches, and a reciprocable member'for applying cement to opposed film faces lying between said benches.

20. A film mending and assembling machine comprising a pair of relativelymovable cutting blocks, a frame in which said blocks are mounted, a cement reservoir connected with said frame, a cement' applier extending from the reservoir and reciprocable between said blocks, and means connected with said applier and extending throiigli said frame for manipulation of the appliei.

2l. A film handling machine eompiising n. frame, d lmovable block mounted in said frame and adapted to engage a film, ar reciprocating lstem mounted in said 'frame and having one end fixed in said block, a spring secured to the frame and pressing against the block, arelatively ifXed block also mounted in the frame, and a spring secured 10 to the frame and pressing against said fixed block to press the latter against the movable block.

In testimonyy whereof I affix my signa:- ture.

ELMER L.y VAN FELT. 

